Home / 15,231.44-21,019.50-8,517.45

Finding the Fourth Proportional to 15,231.44, 21,019.50 and 8,517.45

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Solution

The fourth proportional to 15,231.44, 21,019.50 and 8,517.45 is: 11,754.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,231.44 : 21,019.50 = 8,517.45 : x
  2. Step 2: Convert to fraction form
    15,231.44/21,019.50 = 8,517.45/x
  3. Step 3: Cross multiply
    15,231.44x = 21,019.50 × 8,517.45
  4. Step 4: Simplify right side
    15,231.44x = 179,032,619.10
  5. Step 5: Solve for x
    x = 179,032,619.10/15,231.44
  6. Step 6: Final answer
    x = 11,754.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.